Funding for this research was provided by:
National Natural Science Foundation of China (61632002, 61472372)
Science and Technology Innovation Talents of Henan Province (174200510012)
the Innovation Scientists and Technicians Troop Construction Projects of Henan Province (154200510012)
National Natural Science Foundation of China (61502004)
Article History
First Online: 19 June 2018
Compliance with ethical standards
:
: The authors Suxia Jiang, Yanfeng Wang, and Yansen Su declare that they have no conflict of interest.